/*
 * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 */

/*
 *
 *
 *
 *
 *
 * The MIT License
 *
 * Copyright (c) 2004-2015 Paul R. Holser, Jr.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package jdk.internal.joptsimple.internal;

import java.util.HashMap;
import java.util.Map;

/**
 * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
 */
public final class Classes {
    private static final Map<Class<?>, Class<?>> WRAPPERS = new HashMap<>( 13 );

    static {
        WRAPPERS.put( boolean.class, Boolean.class );
        WRAPPERS.put( byte.class, Byte.class );
        WRAPPERS.put( char.class, Character.class );
        WRAPPERS.put( double.class, Double.class );
        WRAPPERS.put( float.class, Float.class );
        WRAPPERS.put( int.class, Integer.class );
        WRAPPERS.put( long.class, Long.class );
        WRAPPERS.put( short.class, Short.class );
        WRAPPERS.put( void.class, Void.class );
    }

    private Classes() {
        throw new UnsupportedOperationException();
    }

    /**
     * Gives the "short version" of the given class name.  Somewhat naive to inner classes.
     *
     * @param className class name to chew on
     * @return the short name of the class
     */
    public static String shortNameOf( String className ) {
        return className.substring( className.lastIndexOf( '.' ) + 1 );
    }

    /**
     * Gives the primitive wrapper class for the given class. If the given class is not
     * {@linkplain Class#isPrimitive() primitive}, returns the class itself.
     *
     * @param <T> generic class type
     * @param clazz the class to check
     * @return primitive wrapper type if {@code clazz} is primitive, otherwise {@code clazz}
     */
    @SuppressWarnings( "unchecked" )
    public static <T> Class<T> wrapperOf( Class<T> clazz ) {
        return clazz.isPrimitive() ? (Class<T>) WRAPPERS.get( clazz ) : clazz;
    }
}
